Compound for forming runners



UNITED STATES PATENT OFFICE.

ALBERT CARLOS 'ennssnn, or HAMILTON, OHIO.

oonrouivn For, roamine nunnnns.

No Drawing.

T 0 (LE whom it may concern.

Be it known that I, ALBERT CARLOS Gnnssnn, a citizen of the United States, residing at Hamilton, in the county of Butler and State of Ohio, have invented certain new and useful Improvements in Compounds for Forming Runners, of which the following is a specification. i

This invention relates to compounds, and particularly to a compound providing a substitute for fire clay, putty or woven asbestos and other runners used for dams for the pouring of lead joints on horizontal hub and spigot, water, gas and soil pipes, and in pouring Babbitt metal bearings.

In the pouring of Babbitt metal bearings and in the pouring of lead joints in pipes, wet fire clay is commonly used, as is also putty. and asbestos, but rolls made from these materials and used as runners are unsatisfactory, in that the joint so made'is rough and unsightly and there is great; liability of leakage and these runners are ditficult to apply. 1 r i One difficulty of these runners is to secure proper consistency under all service conditions. The object of this compound is to provide a material from which these rolls constituting runners may be made up which always remains the same consistency, which will not blow or sputter, causing waste of material and loss of time, which is not affected by climatic changes, which willnot soften materially and unduly with excessive heat, which will last indefinitely and can be used over and over again. This compound preferably consists of the following ingredients in the following proportions Dry asbestos compound 17.6 oz.

Strained linseed oil 7 oz.

Coal tar pitch or pitch of equivalent character -4 2 on,

This compound is mixed in a power driven mixer having agitating blades in a revolving tank. The various ingredients of the compound are thoroughly mixed to form a tough mass and is then kneaded to the proper consistency. The dry asbestos compound is an asbestos compound commonly found on the market and. consists of approximately 53.36% of asbestos, 31% of silica, 64% of oxide of iron and alumina, 20.20% of lime, 152% of magnesia, 18.9%)3 of carbon dioxide, 4.80% of sulphur trioxide, and 6.23% of water. The coal tar Specification of LettersBatent. Patented D13 7 Application filed April 30, 1921. SeriaI Nil 165,778.

pitch is a by-product of coal secured in the manufacture of coke and gas. I do not Wish to be limited tothe use of coal tar pitch, however, as other mineral pitch as asphaltum may be used in the compound. The

linseed oil is of ordinary commercial character; "I 'do not wish to be limited to the particular asbestos compound referred to,

though this is particularly good for the purpose described, as other compounds of aslinseed oil, as other oils of an equivalent nature might be used for this purpose, though linseed oil has proved itself to be the best for the circumstances. Obviously I do not wishto be limited to the exact pr0 portions of the ingredients, as these proportions might be changed without departing from the spirit of the invention. Thus I may use-from 14lto "18 ounces of dry asbestos, from 6 to 8 ounces of linseed oil, and from 1 to 4 ounces of coal tar pitch or pitch of equivalent character.

In use, the plastic mass produced; by the formulaabovestated' isworked in the hands until it secures a proper consistency. It is :then rolled to the desired length and thickness on a clean surface, and then is applied to the joint or bearing, the pour hole being built high enough to insure a perfect pour and .the edge of the roll being pressed well against the edge of the metal. The joint is then poured and after it is poured and set,

the roll may be cleaned from the metal and then the material is pressed firmly together and put back in the sealed container from which it 1 was taken. If the compound should become too stiff for use, lubricating asbestos may be used but the composition asbestos before referred to is particularly satisfactory.

I do not wish to be limited to the use of linseed oil, as any other vegetable oil having practically the same characteristics .as linseed oil may be used. Linseed oil is used in the compound because of its tendency to gum when exposed to air and this feature in the linseed oil adds to the life of the comound because of the thin film of gum coatmg enveloping the same which protects the compound and tends to prevent it from hardening with exposure.

I have heretofore referred to the fact that lubricating oil may be mixed with the mass should it become too stiff. The term lubrieating oil refers to the mineral oils which have a relatively high flashing point. This mineral oil is used to soften the roll and is particularly desirable because it does not dry out readily, and moreover is easily obtained in almost any place. The coal tar pitch or asphaltum adds to the toughness of the compound. The reason why the compound remains in the same consistency is particularly because of the use of linseed oil which gums upon exposure, as before stated.

A runner constructed in accordaneewith my invention will not blow or sputter because there is anabsence of moisture. This is the difficulty with using wet clay rolls.

Wet clay is particularly dangerous because of the extreme moisture content, and moreover is not readily obtained. Climatic changes do not alter my compound because of its combination of oils and pitch which in combination resist the congealingeifects of relatively low temperatures. Excessive heat, on the other hand, will not soften the compound beyond use because of the refractory properties of the asbestos. The compound will last indefinitely because there is no wear on the compound and the only loss is due to the carelessness of the operator.

My compound when made into a runner is better than a woven runner because of a certain amount of elasticity which it has and the ease with which it may be applied. Putty as a runner will break, burn through and blow out because of its weak texture and unsightly joints such as are made where woven or rope runners are used. The hub ends of all cast iron pipe are rough and this makes it impossible to apply a woven: runner without great leakage and rough pouring. Furthermore, with my improved runner compound it is possible to build a high pour hole or gate which enables the operator to obtain a perfectly filled joint, whereas a woven runner necessitates so large and so fiat a pour hole or gate that molten metal rarely, if ever, finds its way to the extreme depth of joint, leaving a void which results in a leaky joint, or if babbitting leaves an imperfect bearing, making trouble and waste of time. My compound being entirely plastic may be pressed firmly against irregular metal parts, preventing all leakage of metal while pouring.

I do not wish to be limited to the use of the mineral pitch, as it is possible to form a compound for these runners consisting of a combination of dry finely ground asbestos and linseed oil, though this will not have the toughness, elasticity and other desirable characteristics as will a compound composed of the asbestos, linseed oil and pitch.

I claim 1. A dam forming compound of the character described including dry asbestos 14 to 18 ounces, a vegetable oil 6 to 8 ounces, and from 1 to 4 ounces of mineral pitch.

2. A dam forming compound of the character described including finely ground dry asbestos 14 to 18 ounces, an oil which will gum 6 to 8 ounces, and l to 4 ounces of mineral pitch.

3. A dam forming compound consisting of dry asbestos 17.6 ounces, oil 7 ounces, and mineral pitch 2 ounces.

4:. A dam forming compound consisting of dry asbestos 17.6 ounces, linseed oil 7 ounces, and coal tar pitch Q ounces.

In testimony whereof I hereunto alli); my signature.

ALBERT CARLOS GRESSLE. 

